William a



'(No Model.)

W. A. MoGALLUM. TROLLBY WIRE SUPPORT.

Patented Sept. 29, 1896.

UNITED STATES PATE T OFFIcE.

IVILLIAM A. MOCALLUM, OF CINCINNATI, OHIO, ASSIGNOR TO CHARLES ANDREW,OF SAME PLACE.

TROLLEY-WIRE SU PPO RT.

SPECIFICATION forming part of Letters Patent No. 568,452, datedSeptember 29, 1896.

Application filed March 2, 1896. Serial No. 581,489. (No model.)

To all whom it may concern.-

Be it known that 1, WILLIAM A.l\/ICOALLUM, a citizen of the UnitedStates, residing at Oincinnati, Ohio, have invented new and usefulImprovements in Trolleyire Supports, of which the following is aspecification.

My invention relates to so-called ears employed for suspendingtrolley-wires of electric railways from the cross-wire supports, itsobjects being to provide a secure holding device for the wire, easilymade and applied, to form a secure fastening without the use of solderor other extraneous means, and in which the action of the wire itselfretains it immovably in position, and of such character that the trolleywill pass over without sparkmg.

To this end it consists in the holder or car constructed as herein shownand described.

My invention is illustrated in the accompanying drawings, in whichFigure 1 is a side elevation of the device with wire in place. Fig. 2 isan end elevation of the device without the wire. Fig. 3 is an under planview of the device without wire, and Fig. 4 a perspective view of thesame.

Referring now to the drawings, A designates the improved trolley-wireholder or car, consisting of a longitudinally-extended groovedwire-support C6 and the head or neck I) for insertion of a screw,suspending it from the cross-wire or other support.

The groove in which the wire to rests is arched slightly upward fromeach end to the center, so that the wire contained there is archedupward from a straight line, the bottom of the part a forming the chordof the are thus formed by the wire.

The longitudinal groove in which the wire is retained is open atopposite sides, respectively, from each end toward the center, where theopenings are merged in a diagonal slot or recess 0, of correspondingwidth with the wire, cut from below to the top of the groove. The topwall of the groove is provided with an extended lip d at each end andopposite sides, respectively, of the partct for a purpose presently tobe described. The head or neck I) is united to the part a by continuouswebs 1) b deepest at the junction with the head I), and inclined thencedownwardly toward each end as a support against breaking strains foreach end of the part in.- dependently.

In attaching the wire the ear A while the latter is still attached tothe cross-wire the device is turned slightly upon its screw-stem 6 untilthe diagonal slot 0 is in line with the wire w. The latter being thenpushed upward into the slot 0, the device is then turned back to itsproper position, the wire being forced into the open sides of thegroove. When in proper position, the lips 61 are then bent down over thesides of the wire to retain it laterally in proper relation to thedevice, and the fastening is complete. The wire is as easily detached bya reversal of the process.

It will be observed by the arching of the groove the longitudinalextension holds the wire securely against end play, and, indeed, againstany displacement in relation to the holding device A; also, that by thediagonal position of the slot 0 the trolley-wheel in passing makescontact with one side of the part a before leaving the other, so that nosparking can occur.

I claim as my invention and desire to secure by Letters Patent of theUnited States A trolley-wire-supporting ear, embodying a longitudinalembracing support having a groove open at opposite sides respectivelyfrom each end toward the center, a central diagonal slot through thebottom wall into the groove, a central head for the stem attachment, andstrengthening-webs connecting the head at each side with thelongitudinal groove-support, substantially as set forth.

In testimony whereof I have hereunto set I my hand in the presence oftwo subscribing witnesses.

WILLIAM A. McOALLUM'. Witnesses:

L. M. HosEA, FRANK K. BOWMAN.

